[Ack][PATCH oneiric] drm/i915: enable ring freq scaling, RC6 and graphics turbo on Ivy Bridge v3

Leann Ogasawara leann.ogasawara at canonical.com
Tue Nov 8 21:41:46 UTC 2011


On Tue, 2011-11-08 at 15:46 -0500, Robert Hooker wrote:
> From: Jesse Barnes <jbarnes at virtuousgeek.org>
> 
> They use the same register interfaces, so we can simply enable the
> existing code on IVB.
> 
> v2:
>   - resolve conflict with ring freq scaling, we can enable it too
> v3:
>   - resolve conflict again, this time on drm-intel-next
> 
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> Signed-off-by: Keith Packard <keithp at keithp.com>
> 
> Upstream commit 1c70c0cebd1295a42fec75045b8a6b4419cedef3

Even though this is not a clean cherry-pick from upstream it's pretty
straightforward and no risk of regression.  It also appears to have been
tested on IvyBridge.  I'm not sure if you'll need to create a dummy LP
bug just for SRU tracking purposes.  I'll leave that to the stable
maintenance team to sort out. 

> Backported to 3.0.x, ring freq scaling isn't available
> there.
> 
> Signed-off-by: Robert Hooker <robert.hooker at canonical.com>

Acked-by: Leann Ogasawara <leann.ogasawara at canonical.com>

> ---
>  drivers/gpu/drm/i915/i915_debugfs.c  |    2 +-
>  drivers/gpu/drm/i915/intel_display.c |    4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 0a893f7..e36efdc 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -865,7 +865,7 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused)
>  			   MEMSTAT_VID_SHIFT);
>  		seq_printf(m, "Current P-state: %d\n",
>  			   (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
> -	} else if (IS_GEN6(dev)) {
> +	} else if (IS_GEN6(dev) || IS_GEN7(dev)) {
>  		u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
>  		u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
>  		u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index e917c7b..2a7a64c 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -7941,7 +7941,7 @@ void intel_modeset_init(struct drm_device *dev)
>  		intel_init_emon(dev);
>  	}
>  
> -	if (IS_GEN6(dev))
> +	if (IS_GEN6(dev) || IS_GEN7(dev))
>  		gen6_enable_rps(dev_priv);
>  
>  	INIT_WORK(&dev_priv->idle_work, intel_idle_update);
> @@ -7983,7 +7983,7 @@ void intel_modeset_cleanup(struct drm_device *dev)
>  
>  	if (IS_IRONLAKE_M(dev))
>  		ironlake_disable_drps(dev);
> -	if (IS_GEN6(dev))
> +	if (IS_GEN6(dev) || IS_GEN7(dev))
>  		gen6_disable_rps(dev);
>  
>  	if (IS_IRONLAKE_M(dev))
> -- 
> 1.7.0.4
> 
> 






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